1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * Copyright (C) 2007 Oracle. All rights reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public 7 * License v2 as published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public 15 * License along with this program; if not, write to the 16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 17 * Boston, MA 021110-1307, USA. 18 */ 19 20 #ifndef _UAPI_LINUX_BTRFS_H 21 #define _UAPI_LINUX_BTRFS_H 22 #include <linux/types.h> 23 #include <linux/ioctl.h> 24 25 #define BTRFS_IOCTL_MAGIC 0x94 26 #define BTRFS_VOL_NAME_MAX 255 27 #define BTRFS_LABEL_SIZE 256 28 29 /* this should be 4k */ 30 #define BTRFS_PATH_NAME_MAX 4087 31 struct btrfs_ioctl_vol_args { 32 __s64 fd; 33 char name[BTRFS_PATH_NAME_MAX + 1]; 34 }; 35 36 #define BTRFS_DEVICE_PATH_NAME_MAX 1024 37 #define BTRFS_SUBVOL_NAME_MAX 4039 38 39 #define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) 40 #define BTRFS_SUBVOL_RDONLY (1ULL << 1) 41 #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) 42 43 #define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3) 44 45 #define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \ 46 (BTRFS_SUBVOL_CREATE_ASYNC | \ 47 BTRFS_SUBVOL_RDONLY | \ 48 BTRFS_SUBVOL_QGROUP_INHERIT | \ 49 BTRFS_DEVICE_SPEC_BY_ID) 50 51 #define BTRFS_FSID_SIZE 16 52 #define BTRFS_UUID_SIZE 16 53 #define BTRFS_UUID_UNPARSED_SIZE 37 54 55 /* 56 * flags definition for qgroup limits 57 * 58 * Used by: 59 * struct btrfs_qgroup_limit.flags 60 * struct btrfs_qgroup_limit_item.flags 61 */ 62 #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) 63 #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) 64 #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) 65 #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) 66 #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) 67 #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) 68 69 struct btrfs_qgroup_limit { 70 __u64 flags; 71 __u64 max_rfer; 72 __u64 max_excl; 73 __u64 rsv_rfer; 74 __u64 rsv_excl; 75 }; 76 77 /* 78 * flags definition for qgroup inheritance 79 * 80 * Used by: 81 * struct btrfs_qgroup_inherit.flags 82 */ 83 #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0) 84 85 struct btrfs_qgroup_inherit { 86 __u64 flags; 87 __u64 num_qgroups; 88 __u64 num_ref_copies; 89 __u64 num_excl_copies; 90 struct btrfs_qgroup_limit lim; 91 __u64 qgroups[0]; 92 }; 93 94 struct btrfs_ioctl_qgroup_limit_args { 95 __u64 qgroupid; 96 struct btrfs_qgroup_limit lim; 97 }; 98 99 /* 100 * flags for subvolumes 101 * 102 * Used by: 103 * struct btrfs_ioctl_vol_args_v2.flags 104 * 105 * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: 106 * - BTRFS_IOC_SUBVOL_GETFLAGS 107 * - BTRFS_IOC_SUBVOL_SETFLAGS 108 */ 109 110 struct btrfs_ioctl_vol_args_v2 { 111 __s64 fd; 112 __u64 transid; 113 __u64 flags; 114 union { 115 struct { 116 __u64 size; 117 struct btrfs_qgroup_inherit __user *qgroup_inherit; 118 }; 119 __u64 unused[4]; 120 }; 121 union { 122 char name[BTRFS_SUBVOL_NAME_MAX + 1]; 123 __u64 devid; 124 }; 125 }; 126 127 /* 128 * structure to report errors and progress to userspace, either as a 129 * result of a finished scrub, a canceled scrub or a progress inquiry 130 */ 131 struct btrfs_scrub_progress { 132 __u64 data_extents_scrubbed; /* # of data extents scrubbed */ 133 __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ 134 __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ 135 __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ 136 __u64 read_errors; /* # of read errors encountered (EIO) */ 137 __u64 csum_errors; /* # of failed csum checks */ 138 __u64 verify_errors; /* # of occurences, where the metadata 139 * of a tree block did not match the 140 * expected values, like generation or 141 * logical */ 142 __u64 no_csum; /* # of 4k data block for which no csum 143 * is present, probably the result of 144 * data written with nodatasum */ 145 __u64 csum_discards; /* # of csum for which no data was found 146 * in the extent tree. */ 147 __u64 super_errors; /* # of bad super blocks encountered */ 148 __u64 malloc_errors; /* # of internal kmalloc errors. These 149 * will likely cause an incomplete 150 * scrub */ 151 __u64 uncorrectable_errors; /* # of errors where either no intact 152 * copy was found or the writeback 153 * failed */ 154 __u64 corrected_errors; /* # of errors corrected */ 155 __u64 last_physical; /* last physical address scrubbed. In 156 * case a scrub was aborted, this can 157 * be used to restart the scrub */ 158 __u64 unverified_errors; /* # of occurences where a read for a 159 * full (64k) bio failed, but the re- 160 * check succeeded for each 4k piece. 161 * Intermittent error. */ 162 }; 163 164 #define BTRFS_SCRUB_READONLY 1 165 struct btrfs_ioctl_scrub_args { 166 __u64 devid; /* in */ 167 __u64 start; /* in */ 168 __u64 end; /* in */ 169 __u64 flags; /* in */ 170 struct btrfs_scrub_progress progress; /* out */ 171 /* pad to 1k */ 172 __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; 173 }; 174 175 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 176 #define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 177 struct btrfs_ioctl_dev_replace_start_params { 178 __u64 srcdevid; /* in, if 0, use srcdev_name instead */ 179 __u64 cont_reading_from_srcdev_mode; /* in, see #define 180 * above */ 181 __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 182 __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ 183 }; 184 185 #define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0 186 #define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1 187 #define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2 188 #define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3 189 #define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4 190 struct btrfs_ioctl_dev_replace_status_params { 191 __u64 replace_state; /* out, see #define above */ 192 __u64 progress_1000; /* out, 0 <= x <= 1000 */ 193 __u64 time_started; /* out, seconds since 1-Jan-1970 */ 194 __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ 195 __u64 num_write_errors; /* out */ 196 __u64 num_uncorrectable_read_errors; /* out */ 197 }; 198 199 #define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0 200 #define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1 201 #define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2 202 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0 203 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1 204 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2 205 #define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3 206 struct btrfs_ioctl_dev_replace_args { 207 __u64 cmd; /* in */ 208 __u64 result; /* out */ 209 210 union { 211 struct btrfs_ioctl_dev_replace_start_params start; 212 struct btrfs_ioctl_dev_replace_status_params status; 213 }; /* in/out */ 214 215 __u64 spare[64]; 216 }; 217 218 struct btrfs_ioctl_dev_info_args { 219 __u64 devid; /* in/out */ 220 __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ 221 __u64 bytes_used; /* out */ 222 __u64 total_bytes; /* out */ 223 __u64 unused[379]; /* pad to 4k */ 224 __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ 225 }; 226 227 struct btrfs_ioctl_fs_info_args { 228 __u64 max_id; /* out */ 229 __u64 num_devices; /* out */ 230 __u8 fsid[BTRFS_FSID_SIZE]; /* out */ 231 __u32 nodesize; /* out */ 232 __u32 sectorsize; /* out */ 233 __u32 clone_alignment; /* out */ 234 __u32 reserved32; 235 __u64 reserved[122]; /* pad to 1k */ 236 }; 237 238 /* 239 * feature flags 240 * 241 * Used by: 242 * struct btrfs_ioctl_feature_flags 243 */ 244 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) 245 /* 246 * Older kernels (< 4.9) on big-endian systems produced broken free space tree 247 * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions 248 * < 4.7.3). If this bit is clear, then the free space tree cannot be trusted. 249 * btrfs-progs can also intentionally clear this bit to ask the kernel to 250 * rebuild the free space tree, however this might not work on older kernels 251 * that do not know about this bit. If not sure, clear the cache manually on 252 * first mount when booting older kernel versions. 253 */ 254 #define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1) 255 256 #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) 257 #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) 258 #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) 259 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) 260 #define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4) 261 262 /* 263 * older kernels tried to do bigger metadata blocks, but the 264 * code was pretty buggy. Lets not let them try anymore. 265 */ 266 #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) 267 268 #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) 269 #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) 270 #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) 271 #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) 272 273 struct btrfs_ioctl_feature_flags { 274 __u64 compat_flags; 275 __u64 compat_ro_flags; 276 __u64 incompat_flags; 277 }; 278 279 /* balance control ioctl modes */ 280 #define BTRFS_BALANCE_CTL_PAUSE 1 281 #define BTRFS_BALANCE_CTL_CANCEL 2 282 283 /* 284 * this is packed, because it should be exactly the same as its disk 285 * byte order counterpart (struct btrfs_disk_balance_args) 286 */ 287 struct btrfs_balance_args { 288 __u64 profiles; 289 union { 290 __u64 usage; 291 struct { 292 __u32 usage_min; 293 __u32 usage_max; 294 }; 295 }; 296 __u64 devid; 297 __u64 pstart; 298 __u64 pend; 299 __u64 vstart; 300 __u64 vend; 301 302 __u64 target; 303 304 __u64 flags; 305 306 /* 307 * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' 308 * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum 309 * and maximum 310 */ 311 union { 312 __u64 limit; /* limit number of processed chunks */ 313 struct { 314 __u32 limit_min; 315 __u32 limit_max; 316 }; 317 }; 318 319 /* 320 * Process chunks that cross stripes_min..stripes_max devices, 321 * BTRFS_BALANCE_ARGS_STRIPES_RANGE 322 */ 323 __u32 stripes_min; 324 __u32 stripes_max; 325 326 __u64 unused[6]; 327 } __attribute__ ((__packed__)); 328 329 /* report balance progress to userspace */ 330 struct btrfs_balance_progress { 331 __u64 expected; /* estimated # of chunks that will be 332 * relocated to fulfill the request */ 333 __u64 considered; /* # of chunks we have considered so far */ 334 __u64 completed; /* # of chunks relocated so far */ 335 }; 336 337 /* 338 * flags definition for balance 339 * 340 * Restriper's general type filter 341 * 342 * Used by: 343 * btrfs_ioctl_balance_args.flags 344 * btrfs_balance_control.flags (internal) 345 */ 346 #define BTRFS_BALANCE_DATA (1ULL << 0) 347 #define BTRFS_BALANCE_SYSTEM (1ULL << 1) 348 #define BTRFS_BALANCE_METADATA (1ULL << 2) 349 350 #define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ 351 BTRFS_BALANCE_SYSTEM | \ 352 BTRFS_BALANCE_METADATA) 353 354 #define BTRFS_BALANCE_FORCE (1ULL << 3) 355 #define BTRFS_BALANCE_RESUME (1ULL << 4) 356 357 /* 358 * flags definitions for per-type balance args 359 * 360 * Balance filters 361 * 362 * Used by: 363 * struct btrfs_balance_args 364 */ 365 #define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) 366 #define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) 367 #define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) 368 #define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) 369 #define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) 370 #define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) 371 #define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) 372 #define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) 373 #define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) 374 375 #define BTRFS_BALANCE_ARGS_MASK \ 376 (BTRFS_BALANCE_ARGS_PROFILES | \ 377 BTRFS_BALANCE_ARGS_USAGE | \ 378 BTRFS_BALANCE_ARGS_DEVID | \ 379 BTRFS_BALANCE_ARGS_DRANGE | \ 380 BTRFS_BALANCE_ARGS_VRANGE | \ 381 BTRFS_BALANCE_ARGS_LIMIT | \ 382 BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ 383 BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ 384 BTRFS_BALANCE_ARGS_USAGE_RANGE) 385 386 /* 387 * Profile changing flags. When SOFT is set we won't relocate chunk if 388 * it already has the target profile (even though it may be 389 * half-filled). 390 */ 391 #define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) 392 #define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) 393 394 395 /* 396 * flags definition for balance state 397 * 398 * Used by: 399 * struct btrfs_ioctl_balance_args.state 400 */ 401 #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) 402 #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) 403 #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) 404 405 struct btrfs_ioctl_balance_args { 406 __u64 flags; /* in/out */ 407 __u64 state; /* out */ 408 409 struct btrfs_balance_args data; /* in/out */ 410 struct btrfs_balance_args meta; /* in/out */ 411 struct btrfs_balance_args sys; /* in/out */ 412 413 struct btrfs_balance_progress stat; /* out */ 414 415 __u64 unused[72]; /* pad to 1k */ 416 }; 417 418 #define BTRFS_INO_LOOKUP_PATH_MAX 4080 419 struct btrfs_ioctl_ino_lookup_args { 420 __u64 treeid; 421 __u64 objectid; 422 char name[BTRFS_INO_LOOKUP_PATH_MAX]; 423 }; 424 425 /* Search criteria for the btrfs SEARCH ioctl family. */ 426 struct btrfs_ioctl_search_key { 427 /* 428 * The tree we're searching in. 1 is the tree of tree roots, 2 is the 429 * extent tree, etc... 430 * 431 * A special tree_id value of 0 will cause a search in the subvolume 432 * tree that the inode which is passed to the ioctl is part of. 433 */ 434 __u64 tree_id; /* in */ 435 436 /* 437 * When doing a tree search, we're actually taking a slice from a 438 * linear search space of 136-bit keys. 439 * 440 * A full 136-bit tree key is composed as: 441 * (objectid << 72) + (type << 64) + offset 442 * 443 * The individual min and max values for objectid, type and offset 444 * define the min_key and max_key values for the search range. All 445 * metadata items with a key in the interval [min_key, max_key] will be 446 * returned. 447 * 448 * Additionally, we can filter the items returned on transaction id of 449 * the metadata block they're stored in by specifying a transid range. 450 * Be aware that this transaction id only denotes when the metadata 451 * page that currently contains the item got written the last time as 452 * result of a COW operation. The number does not have any meaning 453 * related to the transaction in which an individual item that is being 454 * returned was created or changed. 455 */ 456 __u64 min_objectid; /* in */ 457 __u64 max_objectid; /* in */ 458 __u64 min_offset; /* in */ 459 __u64 max_offset; /* in */ 460 __u64 min_transid; /* in */ 461 __u64 max_transid; /* in */ 462 __u32 min_type; /* in */ 463 __u32 max_type; /* in */ 464 465 /* 466 * input: The maximum amount of results desired. 467 * output: The actual amount of items returned, restricted by any of: 468 * - reaching the upper bound of the search range 469 * - reaching the input nr_items amount of items 470 * - completely filling the supplied memory buffer 471 */ 472 __u32 nr_items; /* in/out */ 473 474 /* align to 64 bits */ 475 __u32 unused; 476 477 /* some extra for later */ 478 __u64 unused1; 479 __u64 unused2; 480 __u64 unused3; 481 __u64 unused4; 482 }; 483 484 struct btrfs_ioctl_search_header { 485 __u64 transid; 486 __u64 objectid; 487 __u64 offset; 488 __u32 type; 489 __u32 len; 490 }; 491 492 #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) 493 /* 494 * the buf is an array of search headers where 495 * each header is followed by the actual item 496 * the type field is expanded to 32 bits for alignment 497 */ 498 struct btrfs_ioctl_search_args { 499 struct btrfs_ioctl_search_key key; 500 char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; 501 }; 502 503 struct btrfs_ioctl_search_args_v2 { 504 struct btrfs_ioctl_search_key key; /* in/out - search parameters */ 505 __u64 buf_size; /* in - size of buffer 506 * out - on EOVERFLOW: needed size 507 * to store item */ 508 __u64 buf[0]; /* out - found items */ 509 }; 510 511 struct btrfs_ioctl_clone_range_args { 512 __s64 src_fd; 513 __u64 src_offset, src_length; 514 __u64 dest_offset; 515 }; 516 517 /* 518 * flags definition for the defrag range ioctl 519 * 520 * Used by: 521 * struct btrfs_ioctl_defrag_range_args.flags 522 */ 523 #define BTRFS_DEFRAG_RANGE_COMPRESS 1 524 #define BTRFS_DEFRAG_RANGE_START_IO 2 525 struct btrfs_ioctl_defrag_range_args { 526 /* start of the defrag operation */ 527 __u64 start; 528 529 /* number of bytes to defrag, use (u64)-1 to say all */ 530 __u64 len; 531 532 /* 533 * flags for the operation, which can include turning 534 * on compression for this one defrag 535 */ 536 __u64 flags; 537 538 /* 539 * any extent bigger than this will be considered 540 * already defragged. Use 0 to take the kernel default 541 * Use 1 to say every single extent must be rewritten 542 */ 543 __u32 extent_thresh; 544 545 /* 546 * which compression method to use if turning on compression 547 * for this defrag operation. If unspecified, zlib will 548 * be used 549 */ 550 __u32 compress_type; 551 552 /* spare for later */ 553 __u32 unused[4]; 554 }; 555 556 557 #define BTRFS_SAME_DATA_DIFFERS 1 558 /* For extent-same ioctl */ 559 struct btrfs_ioctl_same_extent_info { 560 __s64 fd; /* in - destination file */ 561 __u64 logical_offset; /* in - start of extent in destination */ 562 __u64 bytes_deduped; /* out - total # of bytes we were able 563 * to dedupe from this file */ 564 /* status of this dedupe operation: 565 * 0 if dedup succeeds 566 * < 0 for error 567 * == BTRFS_SAME_DATA_DIFFERS if data differs 568 */ 569 __s32 status; /* out - see above description */ 570 __u32 reserved; 571 }; 572 573 struct btrfs_ioctl_same_args { 574 __u64 logical_offset; /* in - start of extent in source */ 575 __u64 length; /* in - length of extent */ 576 __u16 dest_count; /* in - total elements in info array */ 577 __u16 reserved1; 578 __u32 reserved2; 579 struct btrfs_ioctl_same_extent_info info[0]; 580 }; 581 582 struct btrfs_ioctl_space_info { 583 __u64 flags; 584 __u64 total_bytes; 585 __u64 used_bytes; 586 }; 587 588 struct btrfs_ioctl_space_args { 589 __u64 space_slots; 590 __u64 total_spaces; 591 struct btrfs_ioctl_space_info spaces[0]; 592 }; 593 594 struct btrfs_data_container { 595 __u32 bytes_left; /* out -- bytes not needed to deliver output */ 596 __u32 bytes_missing; /* out -- additional bytes needed for result */ 597 __u32 elem_cnt; /* out */ 598 __u32 elem_missed; /* out */ 599 __u64 val[0]; /* out */ 600 }; 601 602 struct btrfs_ioctl_ino_path_args { 603 __u64 inum; /* in */ 604 __u64 size; /* in */ 605 __u64 reserved[4]; 606 /* struct btrfs_data_container *fspath; out */ 607 __u64 fspath; /* out */ 608 }; 609 610 struct btrfs_ioctl_logical_ino_args { 611 __u64 logical; /* in */ 612 __u64 size; /* in */ 613 __u64 reserved[3]; /* must be 0 for now */ 614 __u64 flags; /* in, v2 only */ 615 /* struct btrfs_data_container *inodes; out */ 616 __u64 inodes; 617 }; 618 /* Return every ref to the extent, not just those containing logical block. 619 * Requires logical == extent bytenr. */ 620 #define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0) 621 622 enum btrfs_dev_stat_values { 623 /* disk I/O failure stats */ 624 BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ 625 BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ 626 BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */ 627 628 /* stats for indirect indications for I/O failures */ 629 BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or 630 * contents is illegal: this is an 631 * indication that the block was damaged 632 * during read or write, or written to 633 * wrong location or read from wrong 634 * location */ 635 BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not 636 * been written */ 637 638 BTRFS_DEV_STAT_VALUES_MAX 639 }; 640 641 /* Reset statistics after reading; needs SYS_ADMIN capability */ 642 #define BTRFS_DEV_STATS_RESET (1ULL << 0) 643 644 struct btrfs_ioctl_get_dev_stats { 645 __u64 devid; /* in */ 646 __u64 nr_items; /* in/out */ 647 __u64 flags; /* in/out */ 648 649 /* out values: */ 650 __u64 values[BTRFS_DEV_STAT_VALUES_MAX]; 651 652 __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */ 653 }; 654 655 #define BTRFS_QUOTA_CTL_ENABLE 1 656 #define BTRFS_QUOTA_CTL_DISABLE 2 657 #define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3 658 struct btrfs_ioctl_quota_ctl_args { 659 __u64 cmd; 660 __u64 status; 661 }; 662 663 struct btrfs_ioctl_quota_rescan_args { 664 __u64 flags; 665 __u64 progress; 666 __u64 reserved[6]; 667 }; 668 669 struct btrfs_ioctl_qgroup_assign_args { 670 __u64 assign; 671 __u64 src; 672 __u64 dst; 673 }; 674 675 struct btrfs_ioctl_qgroup_create_args { 676 __u64 create; 677 __u64 qgroupid; 678 }; 679 struct btrfs_ioctl_timespec { 680 __u64 sec; 681 __u32 nsec; 682 }; 683 684 struct btrfs_ioctl_received_subvol_args { 685 char uuid[BTRFS_UUID_SIZE]; /* in */ 686 __u64 stransid; /* in */ 687 __u64 rtransid; /* out */ 688 struct btrfs_ioctl_timespec stime; /* in */ 689 struct btrfs_ioctl_timespec rtime; /* out */ 690 __u64 flags; /* in */ 691 __u64 reserved[16]; /* in */ 692 }; 693 694 /* 695 * Caller doesn't want file data in the send stream, even if the 696 * search of clone sources doesn't find an extent. UPDATE_EXTENT 697 * commands will be sent instead of WRITE commands. 698 */ 699 #define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1 700 701 /* 702 * Do not add the leading stream header. Used when multiple snapshots 703 * are sent back to back. 704 */ 705 #define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2 706 707 /* 708 * Omit the command at the end of the stream that indicated the end 709 * of the stream. This option is used when multiple snapshots are 710 * sent back to back. 711 */ 712 #define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4 713 714 #define BTRFS_SEND_FLAG_MASK \ 715 (BTRFS_SEND_FLAG_NO_FILE_DATA | \ 716 BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ 717 BTRFS_SEND_FLAG_OMIT_END_CMD) 718 719 struct btrfs_ioctl_send_args { 720 __s64 send_fd; /* in */ 721 __u64 clone_sources_count; /* in */ 722 __u64 __user *clone_sources; /* in */ 723 __u64 parent_root; /* in */ 724 __u64 flags; /* in */ 725 __u64 reserved[4]; /* in */ 726 }; 727 728 /* Error codes as returned by the kernel */ 729 enum btrfs_err_code { 730 BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, 731 BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, 732 BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, 733 BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, 734 BTRFS_ERROR_DEV_TGT_REPLACE, 735 BTRFS_ERROR_DEV_MISSING_NOT_FOUND, 736 BTRFS_ERROR_DEV_ONLY_WRITABLE, 737 BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS 738 }; 739 740 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ 741 struct btrfs_ioctl_vol_args) 742 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ 743 struct btrfs_ioctl_vol_args) 744 #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ 745 struct btrfs_ioctl_vol_args) 746 #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ 747 struct btrfs_ioctl_vol_args) 748 /* trans start and trans end are dangerous, and only for 749 * use by applications that know how to avoid the 750 * resulting deadlocks 751 */ 752 #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) 753 #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) 754 #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) 755 756 #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) 757 #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ 758 struct btrfs_ioctl_vol_args) 759 #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ 760 struct btrfs_ioctl_vol_args) 761 #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ 762 struct btrfs_ioctl_vol_args) 763 764 #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ 765 struct btrfs_ioctl_clone_range_args) 766 767 #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ 768 struct btrfs_ioctl_vol_args) 769 #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ 770 struct btrfs_ioctl_vol_args) 771 #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ 772 struct btrfs_ioctl_defrag_range_args) 773 #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 774 struct btrfs_ioctl_search_args) 775 #define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ 776 struct btrfs_ioctl_search_args_v2) 777 #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ 778 struct btrfs_ioctl_ino_lookup_args) 779 #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64) 780 #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ 781 struct btrfs_ioctl_space_args) 782 #define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64) 783 #define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64) 784 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ 785 struct btrfs_ioctl_vol_args_v2) 786 #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ 787 struct btrfs_ioctl_vol_args_v2) 788 #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) 789 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) 790 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ 791 struct btrfs_ioctl_scrub_args) 792 #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) 793 #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ 794 struct btrfs_ioctl_scrub_args) 795 #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ 796 struct btrfs_ioctl_dev_info_args) 797 #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ 798 struct btrfs_ioctl_fs_info_args) 799 #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ 800 struct btrfs_ioctl_balance_args) 801 #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) 802 #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ 803 struct btrfs_ioctl_balance_args) 804 #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ 805 struct btrfs_ioctl_ino_path_args) 806 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ 807 struct btrfs_ioctl_logical_ino_args) 808 #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ 809 struct btrfs_ioctl_received_subvol_args) 810 #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) 811 #define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ 812 struct btrfs_ioctl_vol_args) 813 #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ 814 struct btrfs_ioctl_quota_ctl_args) 815 #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ 816 struct btrfs_ioctl_qgroup_assign_args) 817 #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ 818 struct btrfs_ioctl_qgroup_create_args) 819 #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ 820 struct btrfs_ioctl_qgroup_limit_args) 821 #define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ 822 struct btrfs_ioctl_quota_rescan_args) 823 #define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ 824 struct btrfs_ioctl_quota_rescan_args) 825 #define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46) 826 #define BTRFS_IOC_GET_FSLABEL _IOR(BTRFS_IOCTL_MAGIC, 49, \ 827 char[BTRFS_LABEL_SIZE]) 828 #define BTRFS_IOC_SET_FSLABEL _IOW(BTRFS_IOCTL_MAGIC, 50, \ 829 char[BTRFS_LABEL_SIZE]) 830 #define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ 831 struct btrfs_ioctl_get_dev_stats) 832 #define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ 833 struct btrfs_ioctl_dev_replace_args) 834 #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ 835 struct btrfs_ioctl_same_args) 836 #define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 837 struct btrfs_ioctl_feature_flags) 838 #define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ 839 struct btrfs_ioctl_feature_flags[2]) 840 #define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ 841 struct btrfs_ioctl_feature_flags[3]) 842 #define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ 843 struct btrfs_ioctl_vol_args_v2) 844 #define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \ 845 struct btrfs_ioctl_logical_ino_args) 846 847 #endif /* _UAPI_LINUX_BTRFS_H */ 848